Improvement in parlor heating-stoves



2 Sheets-Sheet 1.

W. A. GREENE. Parlor Heating-Stove.

Patented Oct. 14,1879.

ATTESTI INVENTORI N.PE|'ERS, FHOTO-LITHOGRAFHER WASHINGTON a c.

2 Sheets-Sheet 2. W. A. GREENE.

ATTEST IN'VENTORI rLPETERS. PHQTO-LATHO'GRAPHER. WASHXNGTON D C.

WILLIAM A. GREENE, OF ELIZABETHPORT, ASSIGNOR OF TWO-THIRDS OF HIS RIGHTNEWARK, NEW JERSEY.

TO EDWIN R. OAHOONE AND ANDREW ALBRIGHT, OF

IMPROVEMENT IN PARLOR HEATlNG-STOVES.

Specification forming part of Letters Patent No. 220,529, dated October14, 1879; application filed July 2-1, 1879.

To all whom it may concern Be it known that I, WILLIAM A. GREENE, ofElizabethport, in the county of Union and State of New Jersey, haveinvented certain Improvements in Parlor or Heating Stoves, of which thefollowing is a specification.

My present invention consists in certain improvem ents upon the stoveshown and claimed in my Patent No. 214,906, dated April 29,1879.

In the drawings, Figure l is a vertical midsection of my improved stove.Fig. 2 is a front elevation of the same. Figs. 3, 4, and 5 arehorizontal sections taken, respectively, in the planes of the lines 00a", y y, and z z in Figs. 1 and 2. Figs. 6 and 7 are enlarged views, theformer showing a modification of the partition and air-duct, and thelatter being a detail of the blower. 7

Let A represent the outer walls of the stove; B, the firebox-thereof asa whole; (3, the grate forming the bottom of the fire-box; D, thependent partition in the fire-box, partially dividing the same into afront or primary combustion-chamber, E, and a back or secondarycombustion-chamber, F; G, the charging-opening communicating with thechamber E; H, the perforated plate for supplying air to said chamber,and I the ash-pit.

The ash-pit is provided with a register, a, and with a removableash-hearth, b. The firebox 13 is provided with side lining-plates, c c,and the secondary chamber, F, has a sloping back wall, d, extendingupward from and as a continuation of the grate.

The general construction and arrangement and the precise operation ofthese parts are fully and accurately described in my abovementionedpatent, to which I here make reference.

In my present construction the primary coinbustion-chamber E is, as seenin Fig. 1, of less height than in my former patent, and the opening G iscorrespondingly reduced.

The grate-surface is extended farther back and arranged'in-"two planes,the front portion sloping back from the front to its lowest point justunder the partition D, and the back portion, which is in the chamber F,sloping up from that point to where it joins the back hearth-plate d.This formation I consider the preferable one; but it is not essential tomy invention.

The back wall at is curved upward from where the grate joins it to anearly vertical position, and the back wall Aof the stove is continuedin the same or a similar curve until a nearly horizontal position isreached, almost over the partition D, from which point it ascendsvertically to the top of the stove.

The secondary combustion-chamber, F, is thus formed in a reverse curveor sweep, so that the direction of the gases which first enter it underthe partition D is entirely changed, and they are directed back over thetop of said partition toward the front of the stove.

As the gases ascend from the chamber F they enter the chamber or spaceF, which forms a virtual continuation of the chamber F, and in whichthey divide laterally and pass into side flues, J J, through which theyascend to the top of the stove. These flues (shown best in Fig. 4) areformed of the space between the outer side walls A of the stove and twovertical partitions, c 6, arranged substantially parallel therewith,their lower edges resting on the horizontal, or nearly horizontal, rooff of the chamber E, and their front and back edges supported by thefront and back walls of the stove.

At the top of the stoveis a breeching-chamber, K, formed by a nearlyhorizontal partition or floor-plate, g, extending from the top of onepartition, 0, to the other, but leaving free communication from thefines J J, as shown in Fig. 3.

Just under the breeching K, and between the partitions c e, is arrangedthe off-take box L, its bottom and front sides being formed by a plateor plates, h, extending horizontally, or nearly so, at the bottom, andon an incline or vertically at the front. The back side of this box isformed by the back wall A of the stove, in which are the off-takeaperture and pipe-collar t. An aperture, j, through the plate g atfordscommunication with the breeching K, and an aperture, it, through theplate It communicates with the chamber F, this latter aperture beingprovided with a damper, Z.

The space between the horizontal plates f and g, and between thevertical plates e e,forms an alcove, M, which is open to the front ofthe store, the wall A being cut away in front of it. Communicationbetween this alcove and the chamber F or the interior of the stove iscontrolled by a removable blower, m, extending from the bottom plate, f,to the angle or corner in the plate It, the portion of which latterplate extending above the blower forms the back of the alcove. Theblower is provided with one or more feet, a 11, set at less than a rightangle to its face, upon which feet it stands, with its top tiltedforward when open to admit air to the combastion-chamber, as showninFig. 7. When closed it rests against its seat or frame, which inclinesbackward suflieiently to keep it in place, and the front edges or toesof its feet are lifted off the floor.

The blower m is preferably provided with mica panes for illuminatingpurposes.

A register, 0, in the plate h permits of the admission of air from thealcove M to the Ofi'-take box L, and the handle by which the damper l isoperated preferably projects into the alcove. In the roof-plate f of theprimary combustion-chamber, E, back of the blower m, a register, p,.isarranged, to permit of and control the passage of air from said chamberto the chamber F. This register answers to the register f in my PatentNo. 214,906, which fully describes its operation.

The roof-plate fdescends in a gentle curve (or by a straightiucline, ifpreferred) from the blower m to where it joins and rests upon the top ofthe partition I), which it preferably passes partly over and sets intosufiiciently far to be flush with the back surface thereof. Thepartition I), l have now inclined in the opposite direction from thatshown in my previous patent-that is to say, its top is nearer the frontof the stove than its bottom. This is in consequence of the alteredshape of the fire-box and the chamber F, whose throat opposite theregister p would be too contracted were the partition to remain asbefore. It also prevents wedging of the coal against the plate H in thechamber E. Just behind the partition, and about midway of its height,and preferably at or about the center from which the cylindrical portionof the back outer wall A is struck, I arrange a perforated tube orairduct, N, which extends horizontally, or nearly so, from one side ofthe stove to the other, and communicates with the outer air throughapertures in the side walls A A. This airduct being the subject of aseparate application for patent, I make no broad claim to it in this.

In Fig. 6 is shown a modification, the partition D being made hollow andperforated along its lower edge, so as to act also as the airduct N.

In the outside back wall A, just above the top of the hearth d, is anair-register, q, to admil; 9. supply of air to the back part of thechamber F, while the duct N supplies air to the. front part of saidchamber.

1 is a mica window or door located in the curved back wall A, just abovethe register q, so that the illumination caused by the burning fuel andgases may be visible behind the stove.

The charging opening G is or may be provided with sliding doors, as .inmy previous patent; but I prefer that they should slide inside the wallA, instead of outside of the same.

The perforated plate H is not removable in my present construction, andis provided with an outer door or doors, t t, arranged to slide acrossin front of it, and to cover up more or less of its perforations,whereby the admission of air to the chamber E may be controlled. Thesedoors also serve to givea more finished appearance to the front of thestove.

Between the fixed perforated plate [I and the doors t t, I prefer toarrange a plate, H. perforated to correspond with the plate H, andcapable of sliding across it a sufficient distance to cause anon-coincidence of the perforations, and thereby to shut; off the supplyof air, after the manner of a register.

The necessary holes, at u, for the insertion of a poker or slicing-barto manipulate the fuel are formed through both plates H H, and arecovered when the doors t t are closed.

An opening is left in the front wall A, at a lower level than the grateand extending upward from the back edge of the ash-hearth b, throughwhich the ashes that fall on the latter may be caused to enter theash-pit. This opening is normally closed by a gravitating flap, r, hungon pivots or lugs at its ends and adapt ed to be pushed back, asshown'in dotted lines in Fig. 1, while the ashes are being brushed intothe ash-pit. This flap v is shown in front elevation in the small sketchunder Fig. 1.

I am aware that a gravitating door or flap in the nature of my flap 1)has been before used in stoves. it being employed to close an openingconsiderably above the ash-hearth and just opposite the upper surface ofthe grate, through which a poker is inserted to manipulate the fuel. Theopeuing in my stove is on a level with the ash-hearth, so that the ashesand coals can be pushed or brushed from the latter through the openinginto the ash -pit, and is situated below the bottom of the grate, whereit would be useless as a poke-hole.

1n operating my stove, the path of the air and products of combustion isas follows: Air enters the register a and passes up into the fuelthrough the grate. Air also enters into the fuel through the perforatedplate 11, and it all passes under the partition D into the secondarycombustion chamber, F, and up in the latter as hydrocarbon gases. Inthis chamber the gases receive a second supply of air from the duct N onthe front and the register q ou the rear sides. As the gases sweeparound the curved back wall of the chamber F, they are directed therebytoward the front of the stove, and in the chamber F they divide and passto each side into the flues J J, up which they flow into the breechingK, where they unite, and from which they pass down through the aperturej into the off-take box L, and out into the pipe or chimney.

If it is desired to reduce the fire and cause it to burn slowly andquietly, cold air is admitted by the register 0 into the box L, and alsoover the top of the blower m into the chamber F, by tilting the blowerforward upon its feet, as in Fig. 7. To admit a still greater quantityof cool air the blower is removed entirely, being lifted out of thealcove.

In kindling the fire the register 0 and blower m are closed, and thedamper l is removed off from the aperture 7r, so that the gases arepermitted to pass directlyfroni F to L.

The alcove M serves as a sort of oven in which to keep articles hot, ifrequired,or in which hands may be warmed, and for many other usefulpurposes.

I have in this description used the terms "front and back.as referringto the front and back of the stove when its parts are arher is arranged,and the back the side in which the secondary combustion chamber isarranged; but the stove may be so modified as to reverse thisarrangementwithout materially departing from my invention.

I claim as my invention 1. A parlor or heating stove having a primarycombustion-chamber, E, a transverse partition, D, a grate, O, and asecondary combustion-chamber, F, whose back wall is curved in a uniformsweep upward and forward to a point higher than the top of the partitionD, whereby the current of gases passing through it is directed towardthe front of the stove over the said partition and into a flue or lines,substantially as set forth.

2. The chamber E, having a roof-plate, f, the grate G, the partition D,the chamber F, provided with a heartl1-plate, d, and formed with acurved back wall extending upward and forward to a point nearly over thepartition D, the chamber or space F above the chamber F, and the fines JJ, commencing above the roof-platef, and forming an upward continuationof the chamber F, all combined and arranged to operate substantially asset forth.

3. The combination of the chamber E, provided with air-inlet H, thetransverse partition D, the grate O, and the chamber F, of a curvedshape, and provided with air-inlets N and q, arranged upon oppositesides, substantially as set forth.

4. The combination, with the fire-box B, which extends the entire widthof the stove, and is partially divided by the partition D into twocombnstioirchambers, of the sideflues, J J, extending upward from thefire-box, the

breeching-chamber K, and off-take box L, substantially as set forth.

5. The alcove M, arranged in the front of the stove, between the fines JJ, forward of the chamber or space F, over the combustionchamber E, andunder the breeching-chamber K, substantially as and for the purposes setforth.

6. The combination and arrangement of the horizontal plates f and g, thevertical partitions e e, the plate h, and the blower m with the walls ofthe stove, to form the space or chamber F, the tines J J, thebreeching-chamber K, the off-take box L, and the alcove M, substantiallyas set forth.

7. The blower m, arranged to close the opening between the alcove M andchamber F, provided with afoot or feet, a, arranged at less than a rightangle with the plane of the door, substantially as set forth.

8. The off-take box L, arranged between the side flues, J J, and beneaththe breechin g K, provided with an aperture, j, communicating with saidbreeching, and tapped by the pipe collar 1', substantially as set forth.

9. The off-take box L, arranged between the flues J J and between thechambers F and K, provided with the pipe-collar i, the apertures j andk, and the damper Z, substantially as set forth.

10. The combination of the fixed perforated plate H, the slidingperforated plate H, adapted to act as a register, the poke-holes a a,formed through both plates, and the outer door or doors,t t, adaptedwhen closed to cover the poke-holes and conceal the perforated plates,substantially as set forth.

- 11. The combination, with the ash-hearth b and front wall A, of thehanging door or flap o, arranged below the level of the grate andadapted to close by gravity, a space or opening in the front wallextending upward from the back edge of the hearth and communicating withthe ash-pit, substantially as and for the purposes set forth.

12. The removable blower m, arranged in the alcove M, to admit air overits top to the chamber F when tilted or moved forward, in combinationwith the register 0, arranged in the plate It, to admit air from thealcove to the off-take box L, both of which act to reduce the draft andcool the fire, substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

WILLIAM A. GREENE.

Witnesses ARTHUR G. FRASER, HENRY CoNNErT.

